JPH0171182U - - Google Patents
Info
- Publication number
- JPH0171182U JPH0171182U JP1987165338U JP16533887U JPH0171182U JP H0171182 U JPH0171182 U JP H0171182U JP 1987165338 U JP1987165338 U JP 1987165338U JP 16533887 U JP16533887 U JP 16533887U JP H0171182 U JPH0171182 U JP H0171182U
- Authority
- JP
- Japan
- Prior art keywords
- pump
- inverter
- circuit
- starting
- overload
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Description
第１図は本考案を実施したポンプ装置を備えた
冷凍システムを示す全体構成図、第２図は本考案
の一実施例を示す電気回路図、第３図は制御フロ
ーチヤートを示す図、第４図はインバータ運転を
商用交流電源による始動に切換えた際の総流量、
吐出圧、吸込圧の過渡特性図、第５図はインバー
タ運転をインバータによる始動に切換えた際の第
４図に相当する図面である。
Ａ…ポンプ装置、Ｍ１，Ｍ２…モータ、Ｐ１，
Ｐ２…ポンプ、２０…制御装置、２１…起動制御
回路、２２…切換制御回路、２３…インバータ回
路、２４，２５…過負荷検出回路、２６…インバ
ータ、２７…交流起動回路。
Fig. 1 is an overall configuration diagram showing a refrigeration system equipped with a pump device embodying the invention, Fig. 2 is an electric circuit diagram showing an embodiment of the invention, Fig. 3 is a diagram showing a control flowchart, and Fig. 3 is a diagram showing a control flowchart. Figure 4 shows the total flow rate when switching from inverter operation to commercial AC power starting,
FIG. 5, a transient characteristic diagram of discharge pressure and suction pressure, corresponds to FIG. 4 when inverter operation is switched to inverter starting. A...Pump device, M1, M2...Motor, P1,
P2... Pump, 20... Control device, 21... Starting control circuit, 22... Switching control circuit, 23... Inverter circuit, 24, 25... Overload detection circuit, 26... Inverter, 27... AC starting circuit.
Claims (1)
る複数台のモータと、それぞれのモータをインバ
ータを介して起動あるいは停止し、回転速度を変
えるインバータ回路と、それぞれのモータの過負
荷を検出する過負荷検出回路とを備えたポンプ装
置において、前記複数台のモータをそれぞれ商用
交流電源によつて起動する交流起動回路と、前記
インバータ回路および交流起動回路を制御する制
御部とを備え、インバータで運転中のポンプに過
負荷が発生したときにその運転中のポンプを停止
し、他のポンプを商用交流電源で即時起動する切
換手段を設けたことを特徴とするポンプ装置。 Multiple pumps, multiple motors that drive each pump, an inverter circuit that starts or stops each motor via an inverter and changes the rotation speed, and an overload that detects overload of each motor. A pump device comprising a detection circuit, comprising an AC starting circuit that starts each of the plurality of motors by a commercial AC power source, and a control unit that controls the inverter circuit and the AC starting circuit, and the pump device is operated by an inverter. 1. A pump device comprising a switching means for stopping a pump in operation and immediately starting other pumps using a commercial AC power source when an overload occurs in the pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987165338U JPH0171182U (en) | 1987-10-30 | 1987-10-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987165338U JPH0171182U (en) | 1987-10-30 | 1987-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0171182U true JPH0171182U (en) | 1989-05-12 |
Family
ID=31451733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987165338U Pending JPH0171182U (en) | 1987-10-30 | 1987-10-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0171182U (en) |
-
1987
- 1987-10-30 JP JP1987165338U patent/JPH0171182U/ja active Pending
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